Income Taxes (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Components of the provision for income taxes, exclusive of tax effect of unrealized AFS securities gains and losses [Abstract]
Current federal income tax expense		$ 12,884	$ 8,351	$ 11,042
Current state income tax expense		786	513	518
Deferred income tax expense (benefit)		(2,900)	2,030	(246)
Effect of Kentucky tax legislation benefit		(9)	(3,442)	0
Total income tax expense		10,761	7,452	11,314
Reconciliation of income tax expense at the statutory rate to actual income tax expense [Abstract]
Computed at the statutory rate		14,755	15,118	14,814
Adjustments resulting from [Abstract]
Tax-exempt interest		(547)	(563)	(673)
Housing and new markets credits		(4,194)	(4,471)	(2,635)
Dividends received deduction		0	0	(9)
Bank owned life insurance		(277)	(284)	(599)
ESOP dividend deduction		(221)	(203)	(188)
Stock option exercises and restricted stock vesting		(10)	(10)	(39)
Effect of KY tax legislation		(7)	(2,719)	0
State income taxes		621	405	409
Split dollar life insurance		529	0	0
Other		112	179	234
Total income tax expense		$ 10,761	$ 7,452	$ 11,314
Reconciliation of income tax expense at the statutory rate to actual income tax expense [Abstract]
Computed at the statutory rate		21.00%	21.00%	21.00%
Adjustments resulting from [Abstract]
Tax-exempt interest		(0.78%)	(0.78%)	(0.95%)
Housing and new markets credits		(5.97%)	(6.21%)	(3.73%)
Dividends received deduction		0.00%	0.00%	(0.01%)
Bank owned life insurance		(0.39%)	(0.39%)	(0.85%)
ESOP dividend deduction		(0.32%)	(0.28%)	(0.27%)
Stock option exercises and restricted stock vesting		(0.01%)	(0.01%)	(0.06%)
Effect of KY tax legislation		(0.01%)	(3.78%)	0.00%
State income taxes		0.88%	0.56%	0.58%
Split dollar life insurance		0.75%	0.00%	0.00%
Other		0.16%	0.24%	0.33%
Total		15.31%	10.35%	16.04%
Deferred tax assets [Abstract]
Allowance for credit/loan and lease losses	[1]	$ 11,982	$ 8,757
Interest on nonaccrual loans		471	485
Accrued expenses		1,444	1,100
Allowance for other real estate owned		593	1,437
State net operating loss carryforward		3,975	3,786
Lease liabilities		3,468	3,859
Other		470	294
Total deferred tax assets		22,403	19,718
Deferred tax liabilities [Abstract]
Depreciation and amortization		(15,006)	(15,048)
FHLB stock dividends		(1,245)	(1,441)
Loan fee income		(238)	(656)
Mortgage servicing rights		(1,015)	(814)
Unrealized gains on AFS securities		(4,807)	(1,534)
Limited partnership investments		(414)	(326)
Right of use assets		(3,297)	(3,698)
Other		(1,068)	(1,101)
Total deferred tax liabilities		(27,090)	(24,618)
Beginning balance for valuation allowance for deferred tax asset		210	3,957
Change in valuation allowance		(210)	(3,747)
Ending balance for valuation allowance for deferred tax asset		0	210	$ 3,957
Net deferred tax liability		(4,687)	$ (5,110)
Loss carryforwards		$ 100,600

[1] Effective January 1, 2020, the allowance for loan and lease losses became the allowance for credit losses with the implementation of ASU 2016-13, commonly referred to as CECL.